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Personne àcontacter Ms. cheng
1406, tianjin, tianjin
Zinc content: *9.0%, *9.5%, *9.7% Character: White powder, density 5.**6, melting point ***5 cent degree, double gender oxide, can&#**9;t dissolve in water or grain alcohol, dissolve in acid or alkali liquor. Yellow color under high temperature, back to white after cooling
